SEAL INCLUDING FLUID PRESSURE EQUALIZING OR BALANCINGFEATURE:
(under the class definition) Sealing means including means to create a fluid pressure equilibrium at the joint or juncture.
(1) Note. This subclass collects patents for this concept not covered by a regular subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
304, for a process of dynamic, close proximity seal (e.g., contactless, fluent, etc.) created by pressurized sealing fluid introduced to form a barrier.
431+, for a dynamic, close proximity seal (e.g., contactless, fluent, etc.) created by pressurized sealing fluid introduced to form a barrier.
544, for a dynamic segmented ring circumferentially contacting seal for other than a piston having pressure balancing or radial bias reducing means.
SEE OR SEARCH CLASS 384, Bearings, for more than nominal bearing structure or detail (e.g., liner, bearing race, cage, etc.) combined with a specific seal,
479, for a radial antifriction bearing where the seal establishes a pressure or pressure responsive means loads the seal.
